At time t = 0, an object attached to a coiled spring is at its resting position and moving down. Assuming that the motion is simple harmonic with period T, write an equation that relates the displacement d of the object from its rest position after t seconds. Also assume that the positive direction of the motion is up.a = 19;T = 4? seconds

A. d = -19 sin 
B. d = -4 sin 
C. d = -19 sin 
D. d = -19 cos 


Answer: C

Mathematics

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